Caffeine free. All-natural. Created by physicians. Boost your immune system with this daily defense against the common cold. This formula, rich in vitamins and powerful macronutrients chlorella and beta glucan, keeps you healthy. An apple a day keeps the doctor away? The docs at Function thinks that's slightly rude. What you should keep away are the millions of germs threatening to run you down. So to get back in your good graces, the physicians at Function created House Call. Now you can have a little doctor in your fridge. We call him Dr. McDrinky. The House Call formula starts off with a vitamin rich base (including A, B-complex, C, E) and antioxidants (like the smog-scrubbing NAC). The macronutrients chlorella (see: phytoplankton) and beta glucan (pulled from oats) join in to help your immune system focus on and obliterate relevant threats to your health. Function: Make your drink work for you. These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.